In philosophy, being means the existence of a thing. Anything that exists has being. Ontology is the branch of philosophy that studies being. Being is a concept encompassing objective and subjective features of reality and existence. Anything that partakes in being is also called a "being", though often this usage is limited to entities that have subjectivity (as in the expression "human being"). The notion of "being" has, inevitably, been elusive and controversial in the history of philosophy, beginning in Western philosophy with attempts among the pre-Socratics to deploy it intelligibly. The first effort to recognize and define the concept came from Parmenides, who famously said of it that "what is-is". Common words such as "is", "are", and "am" refer directly or indirectly to being.

As an example of efforts in recent times, Martin Heidegger (who himself drew on ancient Greek sources) adopted after German terms like Dasein to articulate the topic.[1] Several modern approaches build on such continental European exemplars as Heidegger, and apply metaphysical results to the understanding of human psychology and the human condition generally (notably in the Existentialist tradition). By contrast, in mainstream Analytical philosophy the topic is more confined to abstract investigation, in the work of such influential theorists as W. V. O. Quine, to name one of many. One of the most fundamental questions that continues to exercise philosophers is posed by William James: "How comes the world to be here at all instead of the nonentity which might be imagined in its place? ... from nothing to being there is no logical bridge."[2]

The deficit of such a bridge was first encountered in history by the Pre-Socratic philosophers during the process of evolving a classification of all beings (noun). Aristotle, who wrote after the Pre-Socratics, applies the term category (perhaps not originally) to ten highest-level classes. They comprise one category of substance (ousiae) existing independently (man, tree) and nine categories of accidents, which can only exist in something else (time, place). In Aristotle, substances are to be clarified by stating their definition: a note expressing a larger class (the genus) followed by further notes expressing specific differences (differentiae) within the class. The substance so defined was a species. For example, the species, man, may be defined as an animal (genus) that is rational (difference). As the difference is potential within the genus; that is, an animal may or may not be rational, the difference is not identical to, and may be distinct from, the genus.

Applied to being, the system fails to arrive at a definition for the simple reason that no difference can be found. The species, the genus, and the difference are all equally being: a being is a being that is being. The genus cannot be nothing because nothing is not a class of everything. The trivial solution that being is being added to nothing is only a tautology: being is being. There is no simpler intermediary between being and non-being that explains and classifies being.

Pre-Socratic reaction to this deficit was varied. As substance theorists they accepted a priori the hypothesis that appearances are deceiving, that reality is to be reached through reasoning. Parmenides reasoned that if everything is identical to being and being is a category of the same thing then there can be neither differences between things nor any change. To be different, or to change, would amount to becoming or being non-being; that is, not existing. Therefore, being is a homogeneous and non-differentiated sphere and the appearance of beings is illusory. Heraclitus, on the other hand, foreshadowed modern thought by denying existence. Reality does not exist, it flows, and beings are an illusion upon the flow.

Aristotle knew of this tradition when he began his Metaphysics, and had already drawn his own conclusion, which he presented under the guise of asking what being is:[3]

"And indeed the question which was raised of old is raised now and always, and is always the subject of doubt, viz., what being is, is just the question, what is substance? For it is this that some assert to be one, others more than one, and that some assert to be limited in number, others unlimited. And so we also must consider chiefly and primarily and almost exclusively what that is which is in this sense."

and reiterates in no uncertain terms:[4] "Nothing, then, which is not a species of a genus will have an essence – only species will have it ....". Being, however, for Aristotle, is not a genus.

One might expect a solution to follow from such certain language but none does. Instead Aristotle launches into a rephrasing of the problem, the Theory of Act and Potency. In the definition of man as a two-legged animal Aristotle presumes that "two-legged" and "animal" are parts of other beings, but as far as man is concerned, are only potentially man. At the point where they are united into a single being, man, the being, becomes actual, or real. Unity is the basis of actuality:[5] "... 'being' is being combined and one, and 'not being' is being not combined but more than one." Actuality has taken the place of existence, but Aristotle is no longer seeking to know what the actual is; he accepts it without question as something generated from the potential. He has found a "half-being" or a "pre-being", the potency, which is fully being as part of some other substance. Substances, in Aristotle, unite what they actually are now with everything they might become.

Some of Thomas Aquinas' propositions were reputedly condemned by Étienne Tempier, the local Bishop of Paris (not the Papal Magisterium itself) in 1270 and 1277,[6][7] but his dedication to the use of philosophy to elucidate theology was so thorough that he was proclaimed a Doctor of the Church in 1568. Those who adopt it are called Thomists.

In a single sentence, parallel to Aristotle's statement asserting that being is substance, St. Thomas pushes away from the Aristotelian doctrine:[8] "Being is not a genus, since it is not predicated univocally but only analogically." His term for analogy is Latin analogia. In the categorical classification of all beings, all substances are partly the same: man and chimpanzee are both animals and the animal part in man is "the same" as the animal part in chimpanzee. Most fundamentally all substances are matter, a theme taken up by science, which postulated one or more matters, such as earth, air, fire or water (Empedocles). In today's chemistry the carbon, hydrogen, oxygen and nitrogen in a chimpanzee are identical to the same elements in a man.

The original text reads, "Although equivocal predications must be reduced to univocal, still in actions, the non-univocal agent must precede the univocal agent. For the non-univocal agent is the universal cause of the whole species, as for instance the sun is the cause of the generation of all men; whereas the univocal agent is not the universal efficient cause of the whole species (otherwise it would be the cause of itself, since it is contained in the species), but is a particular cause of this individual which it places under the species by way of participation. Therefore the universal cause of the whole species is not an univocal agent; and the universal cause comes before the particular cause. But this universal agent, whilst it is not univocal, nevertheless is not altogether equivocal, otherwise it could not produce its own likeness, but rather it is to be called an analogical agent, as all univocal predications are reduced to one first non-univocal analogical predication, which is being."[9]

If substance is the highest category and there is no substance, being, then the unity perceived in all beings by virtue of their existing must be viewed in another way. St. Thomas chose the analogy: all beings are like, or analogous to, each other in existing. This comparison is the basis of his Analogy of Being. The analogy is said of being in many different ways, but the key to it is the real distinction between existence and essence. Existence is the principle that gives reality to an essence not the same in any way as the existence: "If things having essences are real, and it is not of their essence to be, then the reality of these things must be found in some principle other than (really distinct from) their essence."[10] Substance can be real or not. What makes an individual substance – a man, a tree, a planet – real is a distinct act, a "to be", which actuates its unity. An analogy of proportion is therefore possible:[10] "essence is related to existence as potency is related to act."

Existences are not things; they do not themselves exist, they lend themselves to essences, which do not intrinsically have them. They have no nature; an existence receives its nature from the essence it actuates. Existence is not being; it gives being – here a customary phrase is used, existence is a principle (a source) of being, not a previous source, but one which is continually in effect. The stage is set for the concept of God as the cause of all existence, who, as the Almighty, holds everything actual without reason or explanation as an act purely of will.

Aristotle's classificatory scheme had included the five predicables, or characteristics that might be predicated of a substance. One of these was the property, an essential universal true of the species, but not in the definition (in modern terms, some examples would be grammatical language, a property of man, or a spectral pattern characteristic of an element, both of which are defined in other ways). Pointing out that predicables are predicated univocally of substances; that is, they refer to "the same thing" found in each instance, St. Thomas argued that whatever can be said about being is not univocal, because all beings are unique, each actuated by a unique existence. It is the analogous possession of an existence that allows them to be identified as being; therefore, being is an analogous predication.

Whatever can be predicated of all things is universal-like but not universal, category-like but not a category. St. Thomas called them (perhaps not originally) the transcendentia, "transcendentals", because they "climb above" the categories, just as being climbs above substance. Later academics also referred to them as "the properties of being."[11] The number is generally three or four.

In this modern linguistic approach, it is noticed that the original language of the source, e.g. Greek (like German or French or English), has only one word for two concepts, ast and hast, or, like Arabic, has no word at all for either word. It therefore exploits the Persian hast (existential is) versus ast (predicative is or copula) to address both Western and Islamic ontological arguments on being and existence.[13]

This linguistic method shows the scope of confusion created by languages which cannot differentiate between existential be and copula. It manifests, for instance, that the main theme of Heidegger's Being and Time is astī (is-ness) rather than hastī (existence). When, in the beginning of his book, Heidegger claims that people always talk about existence in their everyday language, without knowing what it means, the example he resorts to is: "the sky is blue" which in Persian can be ONLY translated with the use of the copula ast, and says nothing about being or existence.

In the same manner, the linguistic method addresses the ontological works written in Arabic. Since Arabic, like Latin in Europe, had become the official language of philosophical and scientific works in the so-called Islamic World, the early Persian or Arab philosophers had difficulty discussing being or existence, since the Arabic language, like other Semitic languages, had no verb for either predicative "be" (copula) or existential "be". So if you try to translate the aforementioned Heidegger's example into Arabic it appears as السماء زرقاء (viz. "The Sky-- blue") with no linking "is" to be a sign of existential statement. To overcome the problem, when translating the ancient Greek philosophy, certain words were coined like ایس aysa (from Arabic لیس laysa 'not') for 'is'. Eventually the Arabic verb وجد wajada (to find) prevailed, since it was thought that whatever is existent, is to be "found" in the world. Hence existence or Being was called وجود wujud (Cf. Swedishfinns [found]> there exist; also the Medieval Latin coinage of exsistere 'standing out (there in the world)' > appear> exist). Now, with regard to the fact that Persian, as the mother tongue of both Avicenna and Sadrā, was in conflict with either Greek or Arabic in this regard, these philosophers should have been warned implicitly by their mother tongue not to confuse two kinds of linguistic beings (viz. copula vs. existential). In fact when analyzed thoroughly, copula, or Persian ast ('is') indicates an ever-moving chain of relations with no fixed entity to hold onto (every entity, say A, will be dissolved into "A is B" and so on, as soon as one tries to define it). Therefore, the whole reality or what we see as existence ("found" in our world) resembles an ever-changing world of astī (is-ness) flowing in time and space. On the other hand, while Persian ast can be considered as the 3rd person singular of the verb 'to be', there is no verb but an arbitrary one supporting hast ('is' as an existential be= exists) has neither future nor past tense and nor a negative form of its own: hast is just a single untouchable lexeme. It needs no other linguistic element to be complete (Hast. is a complete sentence meaning "s/he it exists"). In fact, any manipulation of the arbitrary verb, e.g. its conjugation, turns hast back into a copula.

Eventually from such linguistic analyses, it appears that while astī (is-ness) would resemble the world of Heraclitus, hastī (existence) would rather approaches a metaphysical concept resembling the Parmenidas's interpretation of existence.

In this regard, Avicenna, who was a firm follower of Aristotle, could not accept either Heraclitian is-ness (where only constant was change), nor Parmenidean monist immoveable existence (the hastī itself being constant). To solve the contradiction, it so appeared to Philosophers of Islamic world that Aristotle considered the core of existence (i.e. its substance/essence) as a fixed constant, while its facade (accident) was prone to change. To translate such a philosophical image into Persian it is like having hastī (existence) as a unique constant core covered by astī (is-ness) as a cloud of ever-changing relationships. It is clear that the Persian language, deconstructs such a composite as a sheer mirage, since it is not clear how to link the interior core (existence) with the exterior shell (is-ness). Furthermore, hast cannot be linked to anything but itself (as it is self-referent).

The argument has a theological echos as well: assuming that God is the Existence, beyond time and space, a question is raised by philosophers of the Islamic world as how he, as a transcendental existence, may ever create or contact a world of is-ness in space-time.

However, Avicenna who was more philosopher than theologian, followed the same line of argumentation as that of his ancient master, Aristotle, and tried to reconcile between ast and hast, by considering the latter as higher order of existence than the former. It is like a hierarchical order of existence. It was a philosophical Tower of Babel that the restriction of his own mother tongue (Persian) would not allow to be built, but he could maneuver in Arabic by giving the two concepts the same name wujud, although with different attributes. So, implicitly, astī (is-ness) appears as ممکن الوجود "momken-al-wujud" (contingent being), and hastī (existence) as واجب الوجود "wājeb-al-wujud" (necessary being).

On the other hand, centuries later, Sadrā, chose a more radical route, by inclining towards the reality of astī (is-ness), as the true mode of existence, and tried to get rid of the concept of hastī (existence as fixed or immovable). Thus, in his philosophy, the universal movement penetrates deep into the Aristoteliansubstance/essence, in unison with changing accident. He called this deep existential change حرکت جوهری harekat-e jowhari (Substantial Movement). In such a changing existence, the whole world has to go through instantaneous annihilation and recreation incessantly, while as Avicenna had predicted in his remarks on Nature, such a universal change or substantial movement would eventually entail the shortening and lengthening of time as well which has never been observed. This logical objection, which was made on Aristotle's argumentation, could not be answered in the ancient times or medieval age, but now it does not sound contradictory to the real nature of Time (as addressed in relativity theory), so by a reverse argument, a philosopher may indeed deduce that everything is changing (moving) even in the deepest core of Being.

Although innovated in the late medieval period, Thomism was dogmatized in the Renaissance. From roughly 1277 to 1567, it dominated the philosophic landscape. The rationalist philosophers, however, with a new emphasis on Reason as a tool of the intellect, brought the classical and medieval traditions under new scrutiny, exercising a new concept of doubt, with varying outcomes. Foremost among the new doubters were the empiricists, the advocates of scientific method, with its emphasis on experimentation and reliance on evidence gathered from sensory experience. In parallel with the revolutions against rising political absolutism based on established religion and the replacement of faith by reasonable faith, new systems of metaphysics were promulgated in the lecture halls by charismatic professors, such as Immanuel Kant, and Hegel. The late 19th and 20th centuries featured an emotional return to the concept of existence under the name of existentialism. These philosophers were concerned mainly with ethics and religion. The metaphysical side became the domain of the phenomenalists. In parallel with these philosophies Thomism continued under the protection of the Catholic Church; in particular, the Jesuit order.

Rationalism and empiricism have had many definitions, most concerned with specific schools of philosophy or groups of philosophers in particular countries, such as Germany. In general rationalism is the predominant school of thought in the multi-national, cross-cultural Age of reason, which began in the century straddling 1600 as a conventional date,[14] empiricism is the reliance on sensory data[15] gathered in experimentation by scientists of any country, who, in the Age of Reason were rationalists. An early professed empiricist, Thomas Hobbes, known as an eccentric denizen of the court of Charles II of England (an "old bear"), published in 1651 Leviathan, a political treatise written during the English civil war, containing an early manifesto in English of rationalism.

"The Latines called Accounts of mony Rationes ... and thence it seems to proceed that they extended the word Ratio, to the faculty of Reckoning in all other things....When a man reasoneth hee does nothing else but conceive a summe totall ... For Reason ... is nothing but Reckoning ... of the consequences of generall names agreed upon, for the marking and signifying of our thoughts ...."

In Hobbes reasoning is the right process of drawing conclusions from definitions (the "names agreed upon"). He goes on to define error as self-contradiction of definition ("an absurdity, or senselesse Speech"[17]) or conclusions that do not follow the definitions on which they are supposed to be based. Science, on the other hand, is the outcome of "right reasoning," which is based on "natural sense and imagination", a kind of sensitivity to nature, as "nature it selfe cannot erre."

Having chosen his ground carefully Hobbes launches an epistemological attack on metaphysics. The academic philosophers had arrived at the Theory of Matter and Form from consideration of certain natural paradoxes subsumed under the general heading of the Unity Problem. For example, a body appears to be one thing and yet it is distributed into many parts. Which is it, one or many? Aristotle had arrived at the real distinction between matter and form, metaphysical components whose interpenetration produces the paradox. The whole unity comes from the substantial form and the distribution into parts from the matter. Inhering in the parts giving them really distinct unities are the accidental forms. The unity of the whole being is actuated by another really distinct principle, the existence.

If nature cannot err, then there are no paradoxes in it; to Hobbes, the paradox is a form of the absurd, which is inconsistency:[18] "Natural sense and imagination, are not subject to absurdity" and "For error is but a deception ... But when we make a generall assertion, unlesse it be a true one, the possibility of it is inconceivable. And words whereby we conceive nothing but the sound, are those we call Absurd ...." Among Hobbes examples are "round quadrangle", "immaterial substance", "free subject."[17] Of the scholastics he says:[19]

"Yet they will have us beleeve, that by the Almighty power of God, one body may be at one and the same time in many places [the problem of the universals]; and many bodies at one and the same time in one place [the whole and the parts]; ... And these are but a small part of the Incongruencies they are forced to, from their disputing philosophically, instead of admiring, and adoring of the Divine and Incomprehensible Nature ...."

The real distinction between essence and existence, and that between form and matter, which served for so long as the basis of metaphysics, Hobbes identifies as "the Error of Separated Essences."[20] The words "Is, or Bee, or Are, and the like" add no meaning to an argument nor do derived words such as "Entity, Essence, Essentially, Essentiality", which "are the names of nothing"[21] but are mere "Signes" connecting "one name or attribute to another: as when we say, "a man is a living body", we mean not that the man is one thing, the living body another, and the is, or being a third: but that the man, and the living body, is the same thing; ..." Metaphysiques, Hobbes says, is "far from the possibility of being understood" and is "repugnant to natural reason."[22]

Being to Hobbes (and the other empiricists) is the physical universe:[23]

The world, (I mean ... the Universe, that is, the whole masse of all things that are) is corporeall, that is to say, Body; and hath the dimension of magnitude, namely, Length, Bredth and Depth: also every part of Body, is likewise Body ... and consequently every part of the Universe is Body, and that which is not Body, is no part of the Universe: and because the Universe is all, that which is no part of it is nothing; and consequently no where."

Hobbes' view is representative of his tradition. As Aristotle offered the categories and the act of existence, and Aquinas the analogy of being, the rationalists also had their own system, the great chain of being, an interlocking hierarchy of beings from God to dust.

Some philosophers deny that the concept of "being" has any meaning at all, since we only define an object's existence by its relation to other objects, and actions it undertakes. The term "I am" has no meaning by itself; it must have an action or relation appended to it. This in turn has led to the thought that "being" and nothingness are closely related, developed in existential philosophy.

Existentialist philosophers such as Sartre, as well as continental philosophers such as Hegel and Heidegger have also written extensively on the concept of being. Hegel distinguishes between the being of objects (being in itself) and the being of people (Geist). Hegel, however, did not think there was much hope for delineating a "meaning" of being, because being stripped of all predicates is simply nothing.

Heidegger, in his quest to re-pose the original pre-Socratic question of Being, wondered at how to meaningfully ask the question of the meaning of being, since it is both the greatest, as it includes everything that is, and the least, since no particular thing can be said of it. He distinguishes between different modes of beings: a privative mode is present-at-hand, whereas beings in a fuller sense are described as ready-to-hand. The one who asks the question of Being is described as Da-sein ("there/here-being") or being-in-the-world. Sartre, popularly understood as misreading Heidegger (an understanding supported by Heidegger's essay "Letter on Humanism" which responds to Sartre's famous address, "Existentialism is a Humanism"), employs modes of being in an attempt to ground his concept of freedom ontologically by distinguishing between being-in-itself and being-for-itself.

Being is also understood as one's "state of being," and hence its common meaning is in the context of human (personal) experience, with aspects that involve expressions and manifestations coming from an innate "being", or personal character. Heidegger coined the term "dasein" for this property of being in his influential work Being and Time ("this entity which each of us is himself…we shall denote by the term 'dasein.'"[1]), in which he argued that being or dasein links one's sense of one's body to one's perception of world. Heidegger, amongst others, referred to an innate language as the foundation of being, which gives signal to all aspects of being.

^For text of condemnations 1277 (technically still 1276 at the date, since before 25 of March) see David Piché, La condemnation parisienne de 1277, [1], parallel Latin text with his French translation, or online list Latin only with footnotes, by Hans-Georg Lundahl, [2]

^Wippel, John F. (2000). The metaphysical thought of Thomas Aquinas: from finite being to uncreated being. Monographs of the Society for Mediaeval and Renaissance Philosophy, No. 1. The Catholic University of America Press. p. 75.

1.
Philosophy
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Philosophy is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language. The term was coined by Pythagoras. Philosophical methods include questioning, critical discussion, rational argument and systematic presentation, classic philosophical questions include, Is it possible to know anything and to prove it. However, philosophers might also pose more practical and concrete questions such as, is it better to be just or unjust. Historically, philosophy encompassed any body of knowledge, from the time of Ancient Greek philosopher Aristotle to the 19th century, natural philosophy encompassed astronomy, medicine and physics. For example, Newtons 1687 Mathematical Principles of Natural Philosophy later became classified as a book of physics, in the 19th century, the growth of modern research universities led academic philosophy and other disciplines to professionalize and specialize. In the modern era, some investigations that were part of philosophy became separate academic disciplines, including psychology, sociology. Other investigations closely related to art, science, politics, or other pursuits remained part of philosophy, for example, is beauty objective or subjective. Are there many scientific methods or just one, is political utopia a hopeful dream or hopeless fantasy. Major sub-fields of academic philosophy include metaphysics, epistemology, ethics, aesthetics, political philosophy, logic, philosophy of science, since the 20th century, professional philosophers contribute to society primarily as professors, researchers and writers. Traditionally, the term referred to any body of knowledge. In this sense, philosophy is related to religion, mathematics, natural science, education. This division is not obsolete but has changed, Natural philosophy has split into the various natural sciences, especially astronomy, physics, chemistry, biology and cosmology. Moral philosophy has birthed the social sciences, but still includes value theory, metaphysical philosophy has birthed formal sciences such as logic, mathematics and philosophy of science, but still includes epistemology, cosmology and others. Many philosophical debates that began in ancient times are still debated today, colin McGinn and others claim that no philosophical progress has occurred during that interval. Chalmers and others, by contrast, see progress in philosophy similar to that in science, in one general sense, philosophy is associated with wisdom, intellectual culture and a search for knowledge. In that sense, all cultures and literate societies ask philosophical questions such as how are we to live, a broad and impartial conception of philosophy then, finds a reasoned inquiry into such matters as reality, morality and life in all world civilizations. Socrates was an influential philosopher, who insisted that he possessed no wisdom but was a pursuer of wisdom

2.
Plato
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Plato was a philosopher in Classical Greece and the founder of the Academy in Athens, the first institution of higher learning in the Western world. He is widely considered the most pivotal figure in the development of philosophy, unlike nearly all of his philosophical contemporaries, Platos entire work is believed to have survived intact for over 2,400 years. Along with his teacher, Socrates, and his most famous student, Aristotle, Plato laid the foundations of Western philosophy. Alfred North Whitehead once noted, the safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato. In addition to being a figure for Western science, philosophy. Friedrich Nietzsche, amongst other scholars, called Christianity, Platonism for the people, Plato was the innovator of the written dialogue and dialectic forms in philosophy, which originate with him. He was not the first thinker or writer to whom the word “philosopher” should be applied, few other authors in the history of Western philosophy approximate him in depth and range, perhaps only Aristotle, Aquinas and Kant would be generally agreed to be of the same rank. Due to a lack of surviving accounts, little is known about Platos early life, the philosopher came from one of the wealthiest and most politically active families in Athens. Ancient sources describe him as a bright though modest boy who excelled in his studies, the exact time and place of Platos birth are unknown, but it is certain that he belonged to an aristocratic and influential family. Based on ancient sources, most modern scholars believe that he was born in Athens or Aegina between 429 and 423 BCE. According to a tradition, reported by Diogenes Laertius, Ariston traced his descent from the king of Athens, Codrus. Platos mother was Perictione, whose family boasted of a relationship with the famous Athenian lawmaker, besides Plato himself, Ariston and Perictione had three other children, these were two sons, Adeimantus and Glaucon, and a daughter Potone, the mother of Speusippus. The brothers Adeimantus and Glaucon are mentioned in the Republic as sons of Ariston, and presumably brothers of Plato, but in a scenario in the Memorabilia, Xenophon confused the issue by presenting a Glaucon much younger than Plato. Then, at twenty-eight, Hermodorus says, went to Euclides in Megara, as Debra Nails argues, The text itself gives no reason to infer that Plato left immediately for Megara and implies the very opposite. Thus, Nails dates Platos birth to 424/423, another legend related that, when Plato was an infant, bees settled on his lips while he was sleeping, an augury of the sweetness of style in which he would discourse about philosophy. Ariston appears to have died in Platos childhood, although the dating of his death is difficult. Perictione then married Pyrilampes, her mothers brother, who had served many times as an ambassador to the Persian court and was a friend of Pericles, Pyrilampes had a son from a previous marriage, Demus, who was famous for his beauty. Perictione gave birth to Pyrilampes second son, Antiphon, the half-brother of Plato and these and other references suggest a considerable amount of family pride and enable us to reconstruct Platos family tree

3.
Immanuel Kant
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Immanuel Kant was a German philosopher who is considered a central figure in modern philosophy. Kant took himself to have effected a Copernican revolution in philosophy and his beliefs continue to have a major influence on contemporary philosophy, especially the fields of metaphysics, epistemology, ethics, political theory, and aesthetics. Politically, Kant was one of the earliest exponents of the idea that peace could be secured through universal democracy. He believed that this will be the outcome of universal history. Kant wanted to put an end to an era of futile and speculative theories of human experience, Kant argued that our experiences are structured by necessary features of our minds. In his view, the shapes and structures experience so that, on an abstract level. Among other things, Kant believed that the concepts of space and time are integral to all human experience, as are our concepts of cause, Kant published other important works on ethics, religion, law, aesthetics, astronomy, and history. These included the Critique of Practical Reason, the Metaphysics of Morals, which dealt with ethics, and the Critique of Judgment, Immanuel Kant was born in 1724 in Königsberg, Prussia. His mother, Anna Regina Reuter, was born in Königsberg to a father from Nuremberg. His father, Johann Georg Kant, was a German harness maker from Memel, Immanuel Kant believed that his paternal grandfather Hans Kant was of Scottish origin. Kant was the fourth of nine children, baptized Emanuel, he changed his name to Immanuel after learning Hebrew. Young Kant was a solid, albeit unspectacular, student and he was brought up in a Pietist household that stressed religious devotion, humility, and a literal interpretation of the Bible. His education was strict, punitive and disciplinary, and focused on Latin and religious instruction over mathematics, despite his religious upbringing and maintaining a belief in God, Kant was skeptical of religion in later life, various commentators have labelled him agnostic. Common myths about Kants personal mannerisms are listed, explained, and refuted in Goldthwaits introduction to his translation of Observations on the Feeling of the Beautiful and Sublime. It is often held that Kant lived a strict and disciplined life. He never married, but seemed to have a social life — he was a popular teacher. He had a circle of friends whom he met, among them Joseph Green. A common myth is that Kant never traveled more than 16 kilometres from Königsberg his whole life, in fact, between 1750 and 1754 he worked as a tutor in Judtschen and in Groß-Arnsdorf

4.
Friedrich Nietzsche
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He began his career as a classical philologist before turning to philosophy. He became the youngest ever to hold the Chair of Classical Philology at the University of Basel in 1869, Nietzsche resigned in 1879 due to health problems that plagued him most of his life, and he completed much of his core writing in the following decade. In 1889, at age 44, he suffered a collapse and he lived his remaining years in the care of his mother, and then with his sister Elisabeth Förster-Nietzsche, and died in 1900. Nietzsches body of work touched widely on art, philology, history, religion, tragedy, culture, and science, and drew inspiration from figures such as Schopenhauer, Wagner. His writing spans philosophical polemics, poetry, cultural criticism, and fiction while displaying a fondness for aphorism, born on 15 October 1844, Nietzsche grew up in the small town of Röcken, near Leipzig, in the Prussian Province of Saxony. He was named after King Frederick William IV of Prussia, who turned forty-nine on the day of Nietzsches birth, Nietzsches parents, Carl Ludwig Nietzsche, a Lutheran pastor and former teacher, and Franziska Oehler, married in 1843, the year before their sons birth. They had two children, a daughter, Elisabeth Förster-Nietzsche, born in 1846, and a second son, Ludwig Joseph. Nietzsches father died from an ailment in 1849, Ludwig Joseph died six months later. The family then moved to Naumburg, where they lived with Nietzsches maternal grandmother, after the death of Nietzsches grandmother in 1856, the family moved into their own house, now Nietzsche-Haus, a museum and Nietzsche study centre. Nietzsche attended a school and then, later, a private school, where he became friends with Gustav Krug, Rudolf Wagner. In 1854, he began to attend Domgymnasium in Naumburg, because his father had worked for the state the now-fatherless Nietzsche was offered a scholarship to study at the internationally recognized Schulpforta. He transferred and studied there from 1858 to 1864, becoming friends with Paul Deussen and he also found time to work on poems and musical compositions. Nietzsche led Germania, a music and literature club, during his summers in Naumburg. His end-of-semester exams in March 1864 showed a 1 in Religion and German, a 2a in Greek and Latin, a 2b in French, History, and Physics, while at Pforta, Nietzsche had a penchant for pursuing subjects that were considered unbecoming. The teacher who corrected the essay gave it a mark but commented that Nietzsche should concern himself in the future with healthier, more lucid. After graduation in September 1864, Nietzsche commenced studies in theology, for a short time he and Deussen became members of the Burschenschaft Frankonia. After one semester, he stopped his studies and lost his faith. In June 1865, at the age of 20, Nietzsche wrote to his sister Elisabeth, who was deeply religious, a letter regarding his loss of faith

5.
Gautama Buddha
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Gautama Buddha, also known as Siddhārtha Gautama, Shakyamuni Buddha, or simply the Buddha, after the title of Buddha, was an ascetic and sage, on whose teachings Buddhism was founded. He is believed to have lived and taught mostly in the part of ancient India sometime between the sixth and fourth centuries BCE. Gautama taught a Middle Way between sensual indulgence and the severe asceticism found in the śramaṇa movement common in his region and he later taught throughout other regions of eastern India such as Magadha and Kosala. Gautama is the figure in Buddhism. He is recognized by Buddhists as a teacher who attained full Buddhahood. Accounts of his life, discourses, and monastic rules are believed by Buddhists to have been summarized after his death, various collections of teachings attributed to him were passed down by oral tradition and first committed to writing about 400 years later. Scholars are hesitant to make unqualified claims about the facts of the Buddhas life. Apart from the Vedic Brahmins, the Buddhas lifetime coincided with the flourishing of influential schools of thought like Ājīvika, Cārvāka, Jainism. Brahmajala Sutta records sixty-two such schools of thought, thus, Buddha was just one of the many śramaṇa philosophers of that time. The times of Gautamas birth and death are uncertain, most historians in the early 20th century dated his lifetime as circa 563 BCE to 483 BCE. These alternative chronologies, however, have not yet accepted by all historians. It was either a republic, or an oligarchy, and his father was an elected chieftain. He obtained his enlightenment in Bodh Gaya, gave his first sermon in Sarnath, no written records about Gautama were found from his lifetime or some centuries thereafter. One Edict of Asoka, who reigned from circa 269 BCE to 232 BCE, another one of his edicts mentions the titles of several Dhamma texts, establishing the existence of a written Buddhist tradition at least by the time of the Maurya era. These texts may be the precursor of the Pāli Canon and they are written in the Gāndhārī language using the Kharosthi script on twenty-seven birch bark manuscripts and date from the first century BCE to the third century CE. The sources for the life of Siddhārtha Gautama are a variety of different and these include the Buddhacarita, Lalitavistara Sūtra, Mahāvastu, and the Nidānakathā. Of these, the Buddhacarita is the earliest full biography, a poem written by the poet Aśvaghoṣa in the first century CE. The Lalitavistara Sūtra is the next oldest biography, a Mahāyāna/Sarvāstivāda biography dating to the 3rd century CE, the Mahāvastu from the Mahāsāṃghika Lokottaravāda tradition is another major biography, composed incrementally until perhaps the 4th century CE

6.
Averroes
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Ibn Rushd, full name, often Latinized as Averroes, was a medieval Andalusian polymath. Ibn Rushd was born in Córdoba, Al Andalus, and died at Marrakesh in present-day Morocco and his body was interred in his family tomb at Córdoba. The 13th-century philosophical movement in Latin Christian and Jewish tradition based on Ibn Rushds work is called Averroism, Ibn Rushd was a defender of Aristotelian philosophy against Ashari theologians led by Al-Ghazali. Although highly regarded as a scholar of the Maliki school of Islamic law. Whereas al-Ghazali believed that any act of a natural phenomenon occurred only because God willed it to happen. Ibn Rushd had a impact on Christian Europe, being known by the sobriquet the Commentator for his detailed emendations to Aristotle. Latin translations of Ibn Rushds work led the way to the popularization of Aristotle, Averroes is the Medieval Latin form of the Hebrew translation Aben Rois or Rosh of the Arabic Ibn Rushd. It is also seen as Averroës, Averrhoës, or Averroès to mark that the o and e are separate vowels, Ibn Rushd was born in Córdoba to a family with a long and well-respected tradition of legal and public service. His grandfather Abu Al-Walid Muhammad was chief judge of Córdoba under the Almoravids and his father, Abu Al-Qasim Ahmad, held the same position until the Almoravids were replaced by the Almohads in 1146. Ibn Rushds education followed a path, beginning with studies in Hadith, linguistics, jurisprudence. Throughout his life he wrote extensively on philosophy and religion, attributes of God, origin of the universe, metaphysics and it is generally believed that he was once tutored by Ibn Bajjah. His medical education was directed under Abu Jafar ibn Harun of Trujillo in Seville, Ibn Rushd began his career with the help of Ibn Tufail, the author of Hayy ibn Yaqdhan and philosophic vizier of Almohad king Abu Yaqub Yusuf who was an amateur of philosophy and science. It was Ibn Tufail who introduced him to the court and to Ibn Zuhr, the great Muslim physician, who became Ibn Rushds teacher and friend. He said that if someone took on these books who could summarize them and clarify their aims after first thoroughly understanding them himself, if you have the energy, Ibn Tufayl told me, you do it. Im confident you can, because I know what a good mind and devoted character you have and you understand that only my great age, the cares of my office — and my commitment to another task that I think even more vital — keep me from doing it myself. Ibn Rushd also studied the works and philosophy of Ibn Bajjah, however, while the thought of his mentors Ibn Tufail and Ibn Bajjah were mystic to an extent, the thought of Ibn Rushd was purely rationalist. Together, the three men are considered the greatest Andalusian philosophers, Ibn Rushd devoted the next 30 years to his philosophical writings. In 1160, Ibn Rushd was made Qadi of Seville and he served in many court appointments in Seville, Cordoba, sometime during the reign of Yaqub al-Mansur, Averroess political career was abruptly ended and he faced severe criticism from the Fuqaha of the time

7.
Buddhist philosophy
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Indian Buddhists sought this understanding not just from the revealed teachings of the Buddha, but through philosophical analysis and rational deliberation. Buddhist thinkers in India and subsequently in East Asia have covered topics as varied as phenomenology, ethics, ontology, epistemology, logic, a recurrent theme in Buddhist philosophy has been the reification of concepts, and the subsequent return to the Buddhist Middle Way. Particular points of Buddhist philosophy have often been the subject of disputes between different schools of Buddhism and these elaborations and disputes gave rise to various schools in early Buddhism of Abhidharma, and to the Mahayana traditions and schools of the prajnaparamita, Madhyamaka, Buddha-nature and Yogacara. Philosophy in India was aimed mainly at spiritual liberation and had soteriological goals, virtually all the great philosophical systems of India, Sāṅkhya, Advaitavedānta, Mādhyamaka and so forth, were preeminently concerned with providing a means to liberation or salvation. It was a tacit assumption with these systems that if their philosophy were correctly understood and assimilated, the goal of Buddhist philosophy is nirvana and to achieve this it needs to investigate the nature of the world. For the Indian Buddhist philosophers, the teachings of the Buddha were not meant to be taken on faith alone, the Buddha also expect his disciples to approach him as a teacher in a critical fashion and scrutinize his actions and words, as shown in the Vīmaṃsaka Sutta. The Buddha was a north Indian sramana from Magadha and he cultivated various yogic techniques and ascetic practices and taught throughout north India, where his teachings took hold. These teachings are preserved in the Pali Nikayas and in the Agamas as well as in other surviving fragmentary textual collections, dating these texts is difficult and there is disagreement on how much of this material goes back to a single religious founder. The Buddha defined his teaching as the middle way, in the Dhammacakkappavattana Sutta, this is used to refer to the fact that his teachings steer a middle course between the extremes of asceticism and bodily denial and sensual hedonism or indulgence. Many sramanas of the Buddhas time placed much emphasis on a denial of the body, using such as fasting. The Buddha however, realized that the mind was embodied and causally dependent on the body, according to Vetter, the description of the Buddhist path may initially have been as simple as the term the middle way. In time, this description was elaborated, resulting in the description of the eightfold path. Vetter argues that the eightfold path constitutes a body of practices which prepare one, and lead up to, according to Vetter and Bronkhorst, dhyāna constituted the original liberating practice, while discriminating insight into transiency as a separate path to liberation was a later development. According to Bronkhorst, the four truths may not have been formulated in earliest Buddhism, Lambert Schmithausen concluded that the four truths were a later development in early Buddhism. Carol Anderson, following Lambert Schmithausen and K. R, norman, notes that the four truths are missing in critical passages in the canon, and states. According to some scholars, the outlook of earliest Buddhism was primarily negative. Only knowledge that is useful in achieving enlightenment is valued, the four noble truths or truths of the noble one are a central feature of the teachings and are put forth in the Dhammacakkappavattana Sutta. The first truth of Dukkha, often translated as suffering, is the inherent unsatisfactoriness of life

8.
Chinese philosophy
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Early Shang Dynasty thought was based upon cycles. Thus, this notion, which remained relevant throughout Chinese history, in juxtaposition, it also marks a fundamental distinction from western philosophy, in which the dominant view of time is a linear progression. During the Shang, fate could be manipulated by great deities, ancestor worship was present and universally recognized. There was also human and animal sacrifice, when the Shang were overthrown by the Zhou, a new political, religious and philosophical concept was introduced called the Mandate of Heaven. This mandate was said to be taken when rulers became unworthy of their position, Confucianism developed during the Spring and Autumn period from the teachings of the Chinese philosopher Confucius, who considered himself a retransmitter of Zhou values. His philosophy concerns the fields of ethics and politics, emphasizing personal and governmental morality, correctness of social relationships, justice, traditionalism, Confucianism was and continues to be a major influence in Chinese culture, the state of China and the surrounding areas of Southeast Asia. Before the Han dynasty the largest rivals to Confucianism were Chinese Legalism, Confucianism largely became the dominant philosophical school of China during the early Han Dynasty following the replacement of its contemporary, the more Taoistic Huang-Lao. The Six Dynasties era saw the rise of the Xuanxue philosophical school and the maturation of Chinese Buddhism, by the time of the Tang dynasty five-hundred years after Buddhisms arrival into China, it had transformed into a thoroughly Chinese religious philosophy dominated by the school of Zen Buddhism. Neo-Confucianism became highly popular during the Song dynasty and Ming Dynasty due in part to the eventual combination of Confucian. During the 19th and 20th centuries, Chinese philosophy integrated concepts from Western philosophy, the most notable examples are Sun Yat-Sens Three Principles of the People ideology and Mao Zedongs Maoism, a variant of Marxism–Leninism. In the modern Peoples Republic of China, the ideology is Deng Xiaopings market economy socialism. Although the Peoples Republic of China has been hostile to the philosophy of ancient China. In the post-Chinese economic reform era, modern Chinese philosophy has reappeared in forms such as the New Confucianism, as in Japan, philosophy in China has become a melting pot of ideas. It accepts new concepts, while attempting also to accord old beliefs their due, Chinese philosophy still carries profound influence amongst the people of East Asia, and even Southeast Asia. Around 500 BCE, after the Zhou state weakened and China moved into the Spring and Autumn period and this is known as the Hundred Schools of Thought. This period is considered the age of Chinese philosophy. Of the many schools founded at this time and during the subsequent Warring States period and it is a system of moral, social, political, and religious thought that has had tremendous influence on Chinese history, thought, and culture down to the 20th century. Some Westerners have considered it to have been the religion of imperial China because of its lasting influence on Asian culture

9.
Jain philosophy
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Jain philosophy is the oldest Indian philosophy that separates body from the soul completely. Jain philosophy deals with reality, cosmology, epistemology and Vitalism, the concept of non-injury or ahiṃsā lies at the core of Jain philosophy. Jain philosophy attempts to explain the rationale of being and existence, the nature of the Universe and its constituents, the nature of bondage and the means to achieve liberation. Jain texts expound that in every half-cycle of time, twenty-four tirthankaras grace this part of the Universe to teach the doctrine of right faith, right knowledge. Jain philosophy means the teachings of a Tirthankara which are recorded in Sacred Jain texts, the distinguishing features of Jain philosophy are, - Belief on independent existence of soul and matter. Refutation of the idea that a divine creator, owner, preserver or destroyer of the universe exists. Accent on relativity and multiple facets of truth and Morality and ethics based on liberation of soul, Jainism strongly upholds the individualistic nature of soul and personal responsibility for ones decisions, and that self-reliance and individual efforts alone are responsible for ones liberation. According to the Jain texts, the vitalities or life-principles are ten, namely the five senses, energy, respiration, life-duration, the organ of speech, the table below summaries the vitalities, living beings possess in accordance to their senses. In the animal world, the five-sensed beings without mind have nine life-principles with the addition of the sense of hearing and those endowed with mind have ten with the addition of the mind. According to Tattvarthasutra, a major Jain text, the severance of vitalities out of passion is injury, according to the Purushartha Siddhyupaya, non-manifestation of passions like attachment is non-injury, and manifestation of such passions is injury. This is termed as the essence of the Jaina Scriptures, vegetarianism and other nonviolent practices and rituals of Jains flow from the principle of ahiṃsā. Jain philosophy postulates that seven tattva constitute reality and these are, - Jīva-The soul substance which is said to have a separate existence from the body that houses it. Jīva is characterised by cetana and upayoga, though the soul experiences both birth and death, it is neither really destroyed nor created. Decay and origin refer respectively to the disappearing of one state of soul and appearance of another state, ajīva- the non-soul āsrava - inflow of auspicious and evil karmic matter into the soul. Bandha - mutual intermingling of the soul and karmas, samvara - obstruction of the inflow of karmic matter into the soul. Nirjara - separation or falling off of part of matter from the soul. Mokṣha - complete annihilation of all karmic matter, the knowledge of these reals is said to be essential for the liberation of the soul. According to the Jain philosophy, the world is full of hiṃsā, therefore, one should direct all his efforts in attainment of moksha

10.
Jewish philosophy
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Jewish philosophy includes all philosophy carried out by Jews, or in relation to the religion of Judaism. With their acceptance into society, Jews with secular educations embraced or developed entirely new philosophies to meet the demands of the world in which they now found themselves. Medieval re-discovery of ancient Greek philosophy among the Geonim of 10th century Babylonian academies brought rationalist philosophy into Biblical-Talmudic Judaism, the philosophy was generally in competition with Kabbalah. Both schools would become part of classic Rabbinic literature, though the decline of scholastic rationalism coincided with events which drew Jews to the Kabbalistic approach. For Ashkenazi Jews, emancipation and encounter with secular thought from the 18th-century onwards altered how philosophy was viewed, Ashkenazi and Sephardi communities had later more ambivalent interaction with secular culture than in Western Europe. In the varied responses to modernity, Jewish philosophical ideas were developed across the range of emerging religious movements, Rabbinic literature sometimes views Abraham as a philosopher. Some have suggested that Abraham introduced a philosophy learned from Melchizedek, a midrash describes how Abraham understood this world to have a creator and director by comparing this world to a house with a light in it, what is now called the argument from design. Psalms contains invitations to admire the wisdom of God through his works, from this, some scholars suggest, Judaism harbors a Philosophical under-current. Ecclesiastes is often considered to be the only genuine philosophical work in the Hebrew Bible, its author seeks to understand the place of human beings in the world, Philo attempted to fuse and harmonize Greek and Jewish philosophy through allegory, which he learned from Jewish exegesis and Stoicism. Philo attempted to make his philosophy the means of defending and justifying Jewish religious truths and these truths he regarded as fixed and determinate, and philosophy was used as an aid to truth, and a means of arriving at it. To this end Philo chose from philosophical tenets of Greeks, refusing those that did not harmonize with Judaism such as Aristotles doctrine of the eternity and indestructibility of the world. Dr. Philosophical speculation was not a part of Rabbinic Judaism. Rabbi Akiva has also been viewed as a figure, his statements include 1. )How favored is man, for he was created after an image for in an image, Elokim made man,2. )Everything is foreseen. But the divine decision is made by the preponderance of the good or bad in ones actions, after the Bar Kokhba revolt, Rabbinic scholars gathered in Tiberias and Safed to re-assemble and re-assess Judaism, its laws, theology, liturgy, beliefs and leadership structure. In 219 CE, the Sura Academy was founded by Abba Arika, for the next five centuries, Talmudic academies focused upon reconstituting Judaism and little, if any, philosophic investigation was pursued. These investigations triggered new ideas and intellectual exchange among Jewish and Islamic scholars in the areas of jurisprudence, mathematics, astronomy, logic, Jewish scholars influenced Islamic scholars and Islamic scholars influenced Jewish scholars. Around 733 CE, Mar Natronai ben Habibai moves to Kairouan, then to Spain, borrowing from the Mutakallamin of Basra, the Karaites were the first Jewish group to subject Judaism to Muʿtazila. Rejecting the Talmud and Rabbinical tradition, Karaites took liberty to reinterpret the Tanakh and this meant abandoning foundational Jewish belief structures

11.
Ethics
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Ethics or moral philosophy is a branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong conduct. The term ethics derives from the Ancient Greek word ἠθικός ethikos, the branch of philosophy axiology comprises the sub-branches of ethics and aesthetics, each concerned with values. As a branch of philosophy, ethics investigates the questions What is the best way for people to live, and What actions are right or wrong in particular circumstances. In practice, ethics seeks to resolve questions of morality by defining concepts such as good and evil, right and wrong, virtue and vice, justice. As a field of enquiry, moral philosophy also is related to the fields of moral psychology, descriptive ethics. Richard William Paul and Linda Elder define ethics as a set of concepts, the Cambridge Dictionary of Philosophy states that the word ethics is commonly used interchangeably with morality. And sometimes it is used narrowly to mean the moral principles of a particular tradition. Paul and Elder state that most people confuse ethics with behaving in accordance with social conventions, religious beliefs, the word ethics in English refers to several things. It can refer to philosophical ethics or moral philosophy—a project that attempts to use reason in order to various kinds of ethical questions. As bioethicist Larry Churchill has written, Ethics, understood as the capacity to think critically about moral values, Ethics can also be used to describe a particular persons own idiosyncratic principles or habits. For example, Joe has strange ethics, the English word ethics is derived from an Ancient Greek word êthikos, which means relating to ones character. The Ancient Greek adjective êthikos is itself derived from another Greek word, meta-ethics asks how we understand, know about, and what we mean when we talk about what is right and what is wrong. An ethical question fixed on some particular practical question—such as, Should I eat this particular piece of chocolate cake. —cannot be a meta-ethical question, a meta-ethical question is abstract and relates to a wide range of more specific practical questions. For example, Is it ever possible to have knowledge of what is right. Meta-ethics has always accompanied philosophical ethics, meta-ethics is also important in G. E. In it he first wrote about what he called the naturalistic fallacy, moore was seen to reject naturalism in ethics, in his Open Question Argument. This made thinkers look again at second order questions about ethics, earlier, the Scottish philosopher David Hume had put forward a similar view on the difference between facts and values. Studies of how we know in ethics divide into cognitivism and non-cognitivism, non-cognitivism is the claim that when we judge something as right or wrong, this is neither true nor false

12.
Political philosophy
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In a vernacular sense, the term political philosophy often refers to a general view, or specific ethic, political belief or attitude, about politics, synonymous to the term political ideology. Chinese political philosophy dates back to the Spring and Autumn period, Chinese political philosophy was developed as a response to the social and political breakdown of the country characteristic of the Spring and Autumn period and the Warring States period. The major philosophies during the period, Confucianism, Legalism, Mohism, Agrarianism and Taoism, philosophers such as Confucius, Mencius, and Mozi, focused on political unity and political stability as the basis of their political philosophies. Confucianism advocated a hierarchical, meritocratic government based on empathy, loyalty, Legalism advocated a highly authoritarian government based on draconian punishments and laws. Mohism advocated a communal, decentralized government centered on frugality and ascetism, the Agrarians advocated a peasant utopian communalism and egalitarianism. Legalism was the dominant political philosophy of the Qin Dynasty, but was replaced by State Confucianism in the Han Dynasty, prior to Chinas adoption of communism, State Confucianism remained the dominant political philosophy of China up to the 20th century. Western political philosophy originates in the philosophy of ancient Greece, where political philosophy dates back to at least Plato, ancient Greece was dominated by city-states, which experimented with various forms of political organization, grouped by Plato into four categories, timocracy, tyranny, democracy and oligarchy. One of the first, extremely important classical works of philosophy is Platos Republic. Roman political philosophy was influenced by the Stoics and the Roman statesman Cicero, Indian political philosophy evolved in ancient times and demarcated a clear distinction between nation and state religion and state. The constitutions of Hindu states evolved over time and were based on political and legal treatises, the institutions of state were broadly divided into governance, administration, defense, law and order. Mantranga, the governing body of these states, consisted of the King, Prime Minister, Commander in chief of army. The Prime Minister headed the committee of ministers along with head of executive, chanakya, 4th century BC Indian political philosopher. Another influential extant Indian treatise on philosophy is the Sukra Neeti. An example of a code of law in ancient India is the Manusmṛti or Laws of Manu, the early Christian philosophy of Augustine of Hippo was heavily influenced by Plato. Augustine also preached that one was not a member of his or her city, augustines City of God is an influential work of this period that attacked the thesis, held by many Christian Romans, that the Christian view could be realized on Earth. Thomas Aquinas meticulously dealt with the varieties of law, according to Aquinas, there are four kinds of law, Eternal law Divine positive law Natural law Human law Aquinas never discusses the nature or categorization of canon law. There is scholarly debate surrounding the place of law within the Thomistic jurisprudential framework. Aquinas was an influential thinker in the Natural Law tradition